Tool-holder for grindstones



(No Model.)

G. H. STRONG su J.`1. GARR.

TO0-L HOLDER FOR GRINDSTONES.

Patented May 22,1883.

No. l277,958.

UNITED STATES GEORGE H. STRONG AND JOHN I. CARR, OF CHICAGO, ILLINOIS,ASSIGNORS i Aram Carica.

TO LAWRENCE W. TATUM, OF CLEVELAND, OHIO.

lTOOL-HOLDER FOR GRINDSTONES.

SPECIFICATION forming part of Letters Patent No. 277,958, dated May 22,1883.'

Application filed March 19, 1883. (No model.)

. To all whom it may concern:

Be it known that we, GEORGE H. STRONG and J oHN` I. CARR, citizens ofthe United States of America, residing at Chicago, in the county of Cbokand Stateof Illinois, have invented certain new 'and useful Improvementsin Tool-Holders for Grindstones, of which the following, in connectionwith the accompanying drawings, is a specification.

In the drawings, Figure l is a side view of a tool-holder embodying ourinvention. Fig. 2 is a top or plan view of the same. Fig. 3 is a likerepresentation in detail, showin ga modiication in the form of the jaw.Fig. 4is aside view of the parts shown in Fig. 3. Fig. 5 is a detail ofthe base or lower parts of the holder, and Fig. 6 is a detail showing ajoint at the forward end of the supporting-arm.

Like letters of reference indicate like parts. A represents thegrindstone, andB its frame. C is the base-piece of the tool-holder.base-piece has a horizontal part, a, adapted for attachment to the frameA, and a vertical part, a', in the top of which is a deep groove, a".

D is a standard or Vsupporting'arm. The

arm D has a horizontal part, b, and a verticalV part, b', and thehorizontal partv has in it a groove, b.

E is a set-screw entering the part af, and having its inner end in thegroove b. By this means the arm D is rendered adjustable or capable ofbeing moved back and forth or to and from the stone A. It is alsoprevented from being tilted, and is retained firmly in its place bymeans of the screw E.

F is a cylindrical bar passing horizontally through the upper end of thearm D.

G is a screw entering the upper end of the arm D. The inner end ofthisscrew enters the bar F and performs the-function of retaining itrigidly in its place.

H is a plate having depending' ears or flanges c c, through which thebar F passes freely, the said plate being tted to the said bar, so as tobe capable of being tilted thereon, and also so as to be capable ofsliding laterally.

H is a vertical projection on the plate H, and I is a screw passingthrough the said pro- 5o jection.

This

J is a plate pivoted to the plate H, and J' is a bridge-bar forming apart of the plate J.

K is a screw passing through the bar J.

L is a handle attached to the plate J. This handle, however, may beattached to the plate H instead of to the plate J.

Mis the knife or cutter of a carpenters plane. To use the parts nowdescribed :for the purposes for which they are intended we arrange thetool to be sharpened underneath the bar J 6o and secure it there rigidlyby turning the screw K down rmly upon it. We also set the plate J sothat the toolwill be heldat any angle desired with relation to the stoneA, and bind the said plate temporarily in that position by means of thescrew I. The plate H and the parts above it We also tilt, if need be, insuch a position as to bring the edge of the tool in proper relation tothe grindstone, so that the edge shall have the proper bevel, when the7o edge of the tool may be retained in contact with the-stone, so as tobear more or less thereon, by raising the handle L. The tool may bemoved to and from the stone by loosening the screw E and sliding the armD in the base C. A

Then by tightening the said screw the said arm will be retained in theposition in which it is set. To move the tool laterally, slide the plateH on the bar F.

To adapt the tool-holder to hold such tools 8o or devices asharvester-sickles, knives, and like tools, we employ, in lieu of theplate J, the pivoted jaw N, and in that case we locate the part H andthe screw I, as shown by theV full lines in Fig. 3, instead of at farside of the plate H; also, where the jaw N is employed, it may beexpedient to connect the bar F to the standard D by means of aknuckle-joint, as shown in Fig. 6, so that the knife or blade may beproperly clamped and presented to the 9o stone A. i

The screw G performs the function of preventing the bar F from movinglaterally when the plate AH is moved laterally thereon; but

this movement of the bar F may be prevented 9g the purposes set forth.roo

. l Having thus described our invention, what grindstones, ci' thesliding standard D, the o vwe claim as new, and desire to secure byLetlindrical bar F, the tilting and sliding plate H, ters Patenti, is arotary or pivoted jaw for receiving the tool 15 1. The combination, in atool -holder for and mounted on the said plate, and the bind- 5grindstones, of the grooved base C, the screw ingscrews K, I, and G,substantially as and E, the sliding standard D, the bar F, the tiltforthe purposes specified. ing plate H, the screw G, a rotar or ivoted jawfor receiving the tool to be sbarpeled, the GEIFHMONG' screw I, and ascrew for binding the tool in 'L 1o thejaw, substantially as and for thepurposes Witnesses:

specified. F. F. WARNER,

2. The combination, in a tool holder for J. B. HALPENNY.

